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Effect of characteristic structure of nested composite hybrid rocket fuel grain on combustion properties
Wang RY(王若岩)1,2; Lin X(林鑫)1; Wang ZZ(王泽众)1; Wu K(吴坤)1; Pan JJ(潘俊杰)1; Zhang ZL(张泽林)1; Luo JX(罗家枭)1; Li F(李飞)1; Yu XL(余西龙)1,2
Corresponding AuthorLin, Xin([email protected]) ; Wang, Zezhong([email protected])
Source PublicationACTA ASTRONAUTICA
2024-05-01
Volume218Pages:269-281
ISSN0094-5765
AbstractThis work numerically and experimentally investigated the effect of the characteristic structure of nested composite fuel grains on their combustion properties. The characteristic structure comprised multiple helical grooves inside the fuel grain port, which formed during the combustion process. Three-dimensional steady-state simulations were employed to analyze the burning behavior of composite fuel grains with different scales of the characteristic structure (i.e., groove depth) of 0, 1, and 2 mm. An obvious swirl-gas flow field and large tangential velocity appeared for fuel grains with the characteristic structure, which was conductive to enhancing the propellant mixing. A larger flame region and more intense burning were correspondingly achieved, during which greater amounts of H2O and CO2 were generated than by fuel grain without the characteristic structure. Numerical results verified that the characteristic structure was theoretically beneficial to improving the combustion properties of the grains. Firing experiments were conducted using a laboratory-scale hybrid rocket engine with oxygen as the oxidizer. The flame structure and pulsation features were synchronously analyzed using a radiation imaging technique. Pure paraffin-based fuel grains with a circular port were tested for comparison. Both regression rates and combustion efficiencies of the composite fuel grains with characteristic structure scales of 1 mm and 2 mm showed significant improvement. The flame images exhibited an obvious helical shape and large area, which was consistent with the numerical analysis. Both the numerical and experimental results confirmed that the helical characteristic structure in the composite fuel grain played a key role in enhancing the combustion properties and demonstrate potential for further development.
KeywordHybrid rocket Composite fuel grain Characteristic structure Radiation image Combustion properties
DOI10.1016/j.actaastro.2024.02.033
Indexed BySCI ; EI
Language英语
WOS IDWOS:001205863500001
WOS KeywordREGRESSION RATE ; MOTOR ; ENGINE ; FLOW
WOS Research AreaEngineering
WOS SubjectEngineering, Aerospace
Funding ProjectNational Natural Science Foundation of China[92271117] ; National Natural Science Foundation of China[12072355] ; National Natural Science Foundation of China[11927803] ; Key -Area Research and Development Program of Guangdong Prov- ince[2021B0909060004] ; Youth Innovation Pro- motion Association of CAS[2022018]
Funding OrganizationNational Natural Science Foundation of China ; Key -Area Research and Development Program of Guangdong Prov- ince ; Youth Innovation Pro- motion Association of CAS
Classification二类/Q1
Ranking1
ContributorLin, Xin ; Wang, Zezhong
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/94973
Collection高温气体动力学国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China;
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang RY,Lin X,Wang ZZ,et al. Effect of characteristic structure of nested composite hybrid rocket fuel grain on combustion properties[J]. ACTA ASTRONAUTICA,2024,218:269-281.Rp_Au:Lin, Xin, Wang, Zezhong
APA 王若岩.,林鑫.,王泽众.,吴坤.,潘俊杰.,...&余西龙.(2024).Effect of characteristic structure of nested composite hybrid rocket fuel grain on combustion properties.ACTA ASTRONAUTICA,218,269-281.
MLA 王若岩,et al."Effect of characteristic structure of nested composite hybrid rocket fuel grain on combustion properties".ACTA ASTRONAUTICA 218(2024):269-281.
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